Re: [Xen-API] Help Hypervisor VM IP reconfig

[Denis Cardon <denis.cardon@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Agyeman,

> Can you help me with the command to change ip address of a vm while on
> hypervisor?
>
> In my case if access to xen center is disabled and a user changes the
> ipaddress of a vm and no longer can ssh to the vm, I would like to be
> able to reset the ip address, netmask, and gateway from the hypervisor.
>
> The command below shows me network info but how to I change that network
> info?
>
> xe vm-list params=name-label,networks
I think this command is read only and show you the ip address that has 
been reported by xentools to the hypervisor.
However I don't think there is a default mechanism in xapi to set the ip 
address of a virtual machine. In some VDI deployement solution, the 
software install a service inside the VDI machine to get the ip address 
from a deployement server.
However you don't need xencenter to get access to the vnc frame buffer 
of the virtual machine. You can get the vnc port using the following 
command line (change my_vm_name, and be sure to be on the server where 
the vm is running if the server is in a pool) :
xenstore-read /local/domain/$(xe vm-list params=dom-id 
name-label=my_vm_name --minimal)/console/vnc-port
Take the port number that is given by the above command line (for 
example 5908), and then, just do a ssh port forwarding :
ssh my_xen_server -L 5908:srvxen1:5908 -l root

then from the same machine, run

vncviewer  localhost:8

Another method for a linux VM : use xe-edit-bootloader -n my_vm_name, 
then from another shell, you can find the vm mounted on /var/run/fix-xxxxxx
when you have fixed the network configuration, you get out of the mount 
point, then get out of the grub editing window, the xe-edit-bootloader 
script will umount the partition by itself.
Cheers,

Denis



> *Thank you,*
>
> *Agyeman B. Danso Jr.*
>
> Security Engineer
>
> infoLock Technologies
>
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>
>
>
> This body part will be downloaded on demand.

--
Denis Cardon
Tranquil IT Systems
Les Espaces Jules Verne, bâtiment A
12 avenue Jules Verne
44230 Saint Sébastien sur Loire
tel : +33 (0) 2.40.97.57.55
http://www.tranquil-it-systems.fr


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